That's correct. >> It is just after 4:00 in the morning when a sheriff's deputy pulls over an SUV on a state route. He says the driver crossed the center line and turned into the wrong lane. She tells him it is her first time in town and she was only following directions to her sister's house. As they talk, she struggles to find her license and registration. Small things on their own, but to a trained officer, they start to add up. >> Hello, Deputy Miller, Sheriff's Office. Are you in park? >> Yes. >> Okay. Your car rolled backwards, that's why I was just making sure you're in park now. >> I I just put it in. >> Okay. The reason we're chatting is you crossed center coming into town and then you completely were in the wrong lane of travel when you turned here. >> It's my first time in town. >> Okay. >> I was just following the maps to my sister's house. >> Okay. Do you have your driver's license, vehicle registration? Where is your sister's house at? >> Cole Road. >> Okay. >> Just up there. >> Anything to drink tonight? >> No. >> None at all? Do you mind if I check your eyes? >> Okay. >> While you're sitting there, just just the hang up. I dropped your ID. Keep your head still. And just look at the tip of the pen with your eyes. We're going to follow with your eyes and your eyes only, okay? Okay. You chance to be honest, okay? Honesty goes a lot further. How much have you had to drink tonight? >> I >> One? How long ago? >> 2 hours. >> Okay. What did you have? >> Uh, strawberry bullets. >> Okay. All right, hang tight for me. I'll be right back. >> The deputy asks a simple question. Have you had anything to drink tonight? At first she says no. But he checks her eyes and then gives her one more chance to be honest, telling her that honesty goes a lot further. This time she admits it. One drink. She says about 2 hours ago. That small admission changes everything. Because now the officer has a lawful reason to investigate further. >> So, just to confirm, you're only 20, right? Okay. Would you mind doing voluntary field sobriety? Make sure you're okay to drive. Cuz here's my concern. You've crossed center and you are struggling to find documents. I'm I'm a little bit worried, right? And And you're under 21, right? And you've admitted to drinking. You mind doing some voluntary field sobriety tests? >> Yeah. >> Okay. Your car's in park, right? Okay. We're going to hop out and we're going to go over here on the sidewalk so we're not on this hill. We're going to go right over here. >> Then comes the detail that matters most. She is only 20 years old. In Washington, like every state, every state, the limit for a driver under 21 is not .08. It is .02, which is just about any measurable alcohol at all. Because she is underage and is already admitted to drinking, the deputy asks her to step out for voluntary field sobriety tests. These field sobriety tests are standardized for a reason. The officer demonstrates each one, then watches for specific clues. On the one-leg stand, she is asked to raise her foot and count out loud. She loses her place, skips a number, and repeats herself. None of this is about being clumsy. The officer is looking for the small signs that alcohol affects balance, attention, and the ability to follow simple instructions. >> You done? Okay. The next one, we're going to go back to that original starting position again, feet together, hands at your side. For this one, it's called the one leg stand. You pick a leg of your choice. You're going to raise it 6 in off the ground, just like this. You're going to keep your foot parallel to the ground. You're going to look at your toe and count out loud. 1,001, 1,002, 1,003, and so on until I tell you to stop. For this one, I want you to look down at your toe, count out loud like I instructed. Keep your arms at your side and your legs straight. Do you understand those instructions? Okay. Which leg are you going to lift tonight? >> Left. >> Okay. Let me get my timer up here, my stopwatch. All right, you may begin. >> 1,001 1,002 1,003 1,004 1,005 1,006 1,007 1,008 1,009 1,010 1,011 1,012 >> Next, he offers a preliminary breath test. He explains it is just like blowing up a balloon and that this roadside test is not a replacement for the official breath test back at the station. The roadside number helps an officer decide whether there is probable cause to make an arrest. Under implied consent laws, simply holding a driver's license means you have already agreed to chemical testing when an officer has a lawful reason to ask. >> So, state of Washington, what's the legal limit cuz you're under 21, right? So, you being under 21, what is it? >> It's zero. >> Two. Two. Okay. Where do you think you're at right now? >> It's zero two. >> You think you're at a zero two. Okay. It's sinking. I'll show it to you. There it goes. You're at a point one two five. Okay. So, right now you are under arrest for DUI. >> Before he shows her the result, he asks where she thinks she is at. She guesses point zero two. The actual reading is point one two five. For any driver that is over the legal limit for a driver under 21, it is more than six times what the law allows. At that point, the deputy tells her she is under arrest for driving under the influence. >> So, because you're in under arrest I got to read you your rights here, okay? So, right now you have the right to remain silent. Anything you say can be used against you in the court of law. You have the right to the presence of an attorney during questioning, and if you cannot afford an attorney, one will be appointed for you prior to questioning if you so desire. You can decide anytime to exercise these rights, not make any statements, or answer any questions. Do you understand these rights? Okay. Just so you know, I am recording as well, okay? What can we do with your car? Do we want to call your sister, or do we want to park your car right here and lock it up where it's secure? >> We'll both. >> We can do both? Does that work? >> Because she is now under arrest and in custody, the deputy reads her rights. >> Okay. >> The right to remain silent. The right to an attorney. The warning that anything she says can be used against her in court. Those rights apply once questioning becomes custodial, not a moment before. From a routine lane violation to a DUI arrest in just a few minutes. What would you have done in the deputy's position? Let us know in the comments and subscribe for more.